Automatic drilling jig



A. 7, 1923 1,464,005 E. J.,K!NG$BURY I AUTOMATIC DRILLING JIG Filed Fe b. 21. 1921 a Sheets-Sheet 1 lill v lilllll Aug. 7, 1923. 1,464,005 E. J. KINGSIBURY AUTOMATIC DRILLING JIG Filed Feb. 21'. 1921 5 Sheets-Sheet s attozneg g I i a \SHIE I 2 Wm E E filw jzg Patented Aug. 7, 192,3.=

EDWARD JOSLIN KINGSEURY,

OF KEENE, NE W HAMPSHIRE.

AUTOMATIC DRILLING- JIG.,

Application filed February 21, 1921. Serial No. 446,866.

T aZZ whom it may concern-1 Be it lrnown that T, EDWARD J. Kinds- BURY, a citizen of the UnitedStates, resid ing at Keene, in the county of Cheshire, State of New Hampshire, have invented certain new and useful improvements in Automatic Drilling Jigs, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

My invention relates to new and useful improvements in automatic drilling machines. I

The object of my invention is to provide a mechanism which is adapted to be used in connectionwith almost any type of dril ing machine and pertains particularly to the application of a pump formed integral therewith for supplying the cooling medium to the drill at a time when the drill is operating as wellasmeans whereby the oil, or a certain portion, not consumed in the drilling operation, is strained and passed back to the pump to'be used again.

Another object of my invention is to provide a drilling machine of this character in which the cooling medium supplying mechanism is controlled by the drill spindle and the work ejecting mechanism controlled by the pump for supplying the cooling medium to the drill, so that the drill can not operate without a supply of cooling medium, and the work can not be ejected while the cool ing medium is being supplied.

A still further object of my invention is to provide a simple and effective drilling machine of this character, in which the oil supplying pump forms a dash-pot for the drill spindle, and having certain details 01": structure and combination or" parts hereinafter more fully described.

Referring to the drawings- Figure 1 is a side elevation of my improved drilling machine;

Figure 2 is a side elevation, partly'in sec-- tion, showing the pump piston locked in its upward position;

Figure 3 is a horizontal transverse sectional view taken on the line 3-3 of Figure 2;

Figure 4 is a perspective view of the work gage.

Fig. 5 is an enlarged sectional view taken on th line 55 of Fig. 1.

Referring now to the drawings, 1 represents the main casting of the drilling ma.-

chine which rests upon a base 2 of any description and is secured thereon by means of screws 2, as shown in Figure 2 of the drawings. This casting is of rectangular form and has at its forward end ahollow portion 3 which forms a receptacle to hold the coolant, in the form of a lubricant, and said portion is directly below the work holding mechanism. This casting, at its rear end, is provided with an enlarged solid portion a and has a vertical cylindrical bore 5 which extends from a point adjacent its lower end through the upper end andforrns a puma cylinder. The casting at its lower end is provided with a horizontal passage 6, which extends entirely therethrough and has its outer end closed by a screw '7, so that access may be had thereto for cleaning the same. This passage 61s in communication with the bore 5 by means ofa restricted passage 8, which is closed by a ball. valve 9, so thatin the downward stroke or" the pump piston the passage is closed and the return of the oil ack to the oil or lubricant receptacle is prevented. In order to limit the upward movement otthe ball valve, I have provided a screw 10, which passes inwardly from the rear wall, as shown in Fig. 2.

The casting l is provided with a horizonpassage 11 which. communicates with the vertical passage 12 and a ball valve 13 is arranged therein toprevent the backward movement of the oil through the passage. Carried by the enlarged portion act the casting is a casting 14c secured thereon by means of the bolts 15. Said casting 1 1 has at its upper end a broadened portion 16, spaced from the casting and has a vertical passage 17 passage 12. The upper end of the passage 17 has a horizontal passage 18 extending outwardly and ending at a point where the drill is working, as will be hereinafter more fully set forth. This casting ll has a rod 19 extending through the passages 17 and 12 and. ending close tothe ball valve 13 so as to limitthe upward movement of said valve. i

The casting 14 has a vertical cylindrical bor 20'communicating at its lower end with the bore 5 and its upper end open, into whichextends the pump piston 21.. The upper end of the pump piston is screw-threaded at 22 and screws into a block23 which is pivotally connected at 24: to the lower ends of the links 23. The upper ends of the which communicates with the 5 die 31.

.means of a thumb-nut 32, so that the lever is rocked on its pivot by the reciprocation of the drill spindle for operating the pump piston 21. r

The side walls of the casting 4 are provided with vertical ribs .or enlargements 33 and 34 which extend to the upper end of the castingfland to which are screwed, means of the screws 35, the two transverse bars 36 and 37, upon which is bolted ora screwed the work -support 38'having openings 39 therethrough" in direct alinement with the drill40, carried by the drill spin Slid-ing upon the work support is the 1 work gage and ejector 41, which is of the shape shown in Figure. 40f the drawings, and has at its forward end the adjustable screw 42' for regulating theinward move ment of the work. This gage, as shown, is provided with a bifurcated portion 43 adapt- 1 ed to straddle the casting'4 and closed by a removable plate 44 held thereon by means of screws 45. The upper end of the casting in the rear is cut away, as indicated at 46 and intersects the bore 5 of the casting 4, so thatthe plate 44 will extend across the bore 5 of the casting'and support the pump iston 21 in its raised position, as shown in ig. 2 of the drawings.

The rear end of the casting 4 is provided "with an ear 47, upon which is pivotally mounted the intermediately pivoted lever 48,'which is pivoted at 49 and has its lower end normally held away from the-casting by means of the outwardly springrpressed pin 50. The said lever 48 is provided with an outwardly extending arm 51 adapted to be engaged by the laterally extending lug. 52 carried by the lever 53 which is also piv otallymounted upon the pivot 49, carried by V the-lug 47. The outer end of said lever is adjusta-bly secured to the lower end of the link 54 by means of the screw 55 and slot 56'a nd the upper end of the link 54 is pivotally connected to the lever 25, interme diate its ends so that the levers 58 and 48 are rocked with each movement of the drill spindle. The upper end of the'lever 48 is cut away, as indicated at 57, and straddling-- the same is the bifurcated outer end 58 of the :pivoteddog59, and is normally held in itsraised position by means of the spring.

60. The upward movement ofthe dog is limited by the shoulders 61, formed by the V cut away portion 57.

The upper face of the plate 14 is provided work clamp is normally held down by the spring 67, so that, when the plunger is forced down by the movement of the drill (hereinafter more fully described) the same is forced down to clamp the work.

By this structure, it will be seen. that oil is supplied to the working point of the drill upon each downward movement of the drill spindle bythe pump piston and said piston also serves as a dashpot to limit the rapidity of the downward movement 'of the drill spindle. r

In operatiomthe work is placedupon the work holder 38 and forced in under'the-upper casting and engages the screw 42 of the gage 41 forcing the gage rearward to bring the portion 44 from below the lower. end of the pump piston. The drill spindle is then lowered, the drill passing through the opening in the upper casting to the work. Simultaneous with the lowering of the drill spindle, then-rm 3O forces the link 28'and lever downwardly, which carries the pump piston, and the oil is forced down the bore 5 of the cylinderthrough the passage 11 and downward movement of the drill spindle is port.

thelever 48 on its pivot49. The reariend of the gage has: been forcedout overthe dog 59 and the spring 60 holds the dog inengagement therein, The continued down ward movement will causetheend ofthe dog to pass upwardly and engage the rear end of the Upon the return upward movement of thepump piston-thelug 52 has moved away from the arm 51 and is some distance above the same. As soon asthe piston has traveled above the'gage, the spring plunger quickly snaps or forces the lever 48 cver'and carries the gage belowi-the lower end of the piston and thus forces the work oil of the work support. It being understood that on the upward movement of th piston the shoulder 65 has. raised the workclamp inthe'position shown inFigrEZ of the drawings; Duringthe upwardmova loo upwardly and outwardly to the drill. The r ment of the piston the ball valve is closed and the valve 9 opened so that oil 1s drawn I from the receptacle through the passage 6,

the receptacle being provided with a screen 68 to filter the oil passing through the opening 39 in the work support before it enters the receptacle. Having thus described my lnvention, what I claim as new and desire to secure by Letthe receptacle, means for connecting the drill spindle to the pumppiston, a lock for holding the pump piston in an upward position, and means for operating said lock.

3. A drilling machine of the character described comprising a receptacle, a work support, a drill spindle and its drill, a recipro eating pump piston in communication with the receptacle, a connection between the drill spindle and thepump piston, a lock for holding the pump piston in an upward position, means operated by the work for releasing said lock, and means operated by the pump operating means for moving said lock into locked position.

(l. A drilling machine of the character de scribed comprising a receptacle, a work support, a drill spindle and its drill, a reciprocating pump piston in communication with the receptacle, a connection between the drill spindle and pump piston, means for conveying the oil from the pump to the work support below the drill, a lock for holding the pump piston in an upward position, and

means operated by the drill spindle for moving the lock into locked position.

5. A drilling machine of the character described comprising a work support, a receptacle below the same, a drill spindle above the support, a pump piston in communication with the receptacle and adapted to supply oil therefrom to the work support below the drill spindle, means connected to the drill spindle for operating the pump, and a work gage carried by the work support adapted to lock the pump piston in a raised position when the work is removed from the support.

6. A drilling machine of the character described comprising a work support, a re ceptacle below the same, a drill spindle above the support, a pump piston in communication with the receptacle and adapted to supply oil therefrom to the Work support below the drill spindle, means operated by the drill spindle for working the pump, a work gage adapted to lock and support the pump piston in its raised position when released by the work, and means operated by the pump operating means for moving the lock into locked position upon the arrival of the pump piston at the end of its up stroke.

7. A drilling machine of the character described comprising a housing having an oil receptacle, a work support above the receptacle, a drill spindle above the work sup port, a pump cylinder communicating with the oil receptacle and having a passage lead ing fromthe cylinder to the work support directly below the drill spindle, a pump piston working in the cylinder and operatively connected to the drill spindle, a work gage on the work support and adapted to lock the pump piston in its upward position, and released by the engagement of the work, and means operated by the drill spindle for moving said gage outwardly for locking the pump piston in its raised position.

8. A drilling machine of the character described comprising a housing having an oil receptacle, a work support, a drill spindle, and a pump piston connected to the drill spindle for supplying oil to the work sup port and forming a dash-pot to regulate the downward movement of the drill spindle.)

9. A drilling machine of the character described comprising a housing having an oil receptacle, a work support, a drill spindle,

and a pump cylinder in communicationwith the receptacle, a pump piston connected to the drill spindle for supplying oil to the work support and forming a dash-pot to regulate the downward movement of the drill spindle, and automatic means for locking the pump piston in a raised position and throwing the work off or" the work support.

10. A drilling machine of the character described comprising a housing having an oil receptacle, a work support above the re ceptacle, a drill spindle above the work support, a pump cylinder in communication with the receptacle and supplying oil to the work support directly below the drill, a pump piston within the cylinder, a link and lever connection between the drill spindle and the pump piston, a gage carried by the work support and adapted to lock the pump piston in its raisedposit-io-n and released by the insertion of the work on the work support, and means connected tothe pump operating means for moving the gage outwardly for locking the pump piston, and snapping the work from the work support.

11. A drilling machine ofthe character described comprising a housing, a work support, an oil receptacle, a pump piston, a drill spindle, a link and lever. connection between:

the pump piston and the drill spindle, a

workgage adapted to lock'the pump piston described comprising al ousing, a worksup port, an oil'rcceptacle, a-pump piston, adrill spindle, a Connection for operating. the.

pump piston with-the drill spindle, a'gage sliding on the support and adapted to lock the pump piston in its raised position and operated bythe insertion of the work, means operated by the pump operating mechanism for snapping the gage over to lock the pis ton wlieirraised, and a work clamp operated by the pump piston. Q

:13. A drilling ma describedcomprising a housing, a work sup port, a pump cylind r, a drill spindle, a-

7 pump piston in the cylinder for forcing the oil to the work support below-the drill spindle, agage slidingin the work support and adapted to lockithe pump :piston in its raised position and to-be released by the insertion ot the' work on the supporhmeans operated by the 'drill spindle for operating the pump piston, an intermediately pivoted spring pressed lever having a spring pressed dog adapted to engage the-gage when the pump piston has reached its upward movement for snapping thegage over for locking the piston and forcing the work from the work support and operated by the drill spindle.

1 L Adri-lling machine of the character described comprising a housing, a work sup-.

port, an oil receptacle below thework supchine of the character port-,a drill spindle above the worksupport,

a pumpcylinde in communication with the receptacle havinga passage leading tothe work support, a pump piston in the cylinder, a link and lever connection between the pump pistonand the drill spindle, a gage on the work support adapted to slide underthe pump 'piston for locking it in its raised positioman intermediately spring pressed lever adjacent the gage, a spring pressed dog adapted to engage the gage and move it outwardly for discharging the work from the support and looking the piston in its raised position, said gage being moved by the insertion of the work for releasing-the piston, a link'and lever connection with the pump operating nieans'for operating the in termediately pivoted lever, and a pivoted work clamp operated by thepump piston.

15. Adrilling machine oft-he character described, comprising. a receptacle, a;-recip rocating pump piston in communication therewith, a drill, and means connectingthe drill to'the pump piston whereby oil is forced to the work and the. pump forums a dash pot to 'cont-rol'the downwardmovement of the drill; v

16. A drilling machine ofthe character described, compris ng a receptacle, a roomrocating pump piston in communication therewith, adrill, a work support, a lock for holding the pump piston vin an upward position, and means connecting the drillto the pump piston, whereby oil is forced to the work and the pump forms a dash pot to control the'speed of therlownward move ment of the drill.

In testimony whereof, I ture.

a'fiiX my signa- 

